command-not-found - suggest installation of missing software packages in terminal

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HowTo: install command-not-found

Introduction

Quote Debian package command-not-found:

Suggest installation of packages in interactive bash sessions This package will install a handler for command_not_found that looks up programs not currently installed but available from the repositories.

Installation

The order in which these commands are run matter, but the process is idempotent. This means it is possible to re-apply all of the following steps.

1. Delete /etc/apt/apt.conf.d/30usability-misc because it contains settings that speed up APT but break command-not-found.

sudo rm -f /etc/apt/apt.conf.d/30usability-misc

2. Install command-not-found.

Install package(s) command-not-found following these instructions

1 Platform specific notice.

• Kicksecure: No special notice.
• Kicksecure-Qubes: In Template.

2 Update the package lists and upgrade the system.

sudo apt update && sudo apt full-upgrade

3 Install the command-not-found package(s).

Using apt command line --no-install-recommends option is in most cases optional.

sudo apt install --no-install-recommends command-not-found

4 Platform specific notice.

• Kicksecure: No special notice.
• Kicksecure-Qubes: Shut down Template and restart App Qubes based on it as per Qubes Template Modification.

5 Done.

The procedure of installing package(s) command-not-found is complete.

3. Run update-command-not-found with root rights.

sudo update-command-not-found

4. Done.

Setup of update-command-not-found has been completed.

Issues

local variable 'cnf' referenced before assignment

• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=917455
• https://salsa.debian.org/jak/command-not-found/-/merge_requests/1

See Also

• apt-file
• command-not-found - WARNING:root:could not open file '/etc/apt/sources.list'
• Speeding up "apt update" with Acquire::Languages=none and Contents-deb::DefaultEnabled=false - It's so much faster!

Footnotes

Kicksecure A secure by default operating system with the latest security research in place.

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